|Courtesy of SPIE.
Ronian's latest paper has been published in the European Journal of Physics! In this new work, Ronian extends conventional optical radiometry to the case of non-stigmatic, non-aplanatic, and non-isoplanatic lenses. Click HERE to read the open-access author-accepted preprint!
Wrapping up the year in 2020, Ronian publishes a technical note describing how to apply a simple formula to compute the relative illumination of an un-vignetted imaging lens system in terms of image distortion, differential distortion, chief ray angle (in object space), and the size and shape of the entrance pupil.
Also, click on the image below to read a Linkedin version of this article, complete with a simple explanation, and Zemax lens files.
Also, click on the image below to read about Ronian's simple "home-made" optics experiment where he demonstrates this focusing effect using a magnifying glass and an ordinary LED desk lamp!